
Identical Twin's Heartbreak: 24-Year-Old Caitlin Leggett Dies Weeks After AML Relapse
A 24-year-old Welsh woman, Caitlin Leggett, died on June 15, 2026, a month after her acute myeloid leukemia returned and she was told she had six months to live. Caitlin had previously gone into remission twice after a 2025 bone marrow transplant; her identical twin Grace was ineligible to donate due to their near-identical DNA, and a GoFundMe sought overseas treatment for Caitlin. Her death followed a brain bleed and subsequent strokes amid treatment complications, a story Caitlin had described publicly (including in a TikTok update about Differentiation Syndrome). The BBC reported on the family’s ordeal.
